/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.spark.sql.execution.datasources.v2

import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.connector.catalog.CatalogManager
import org.apache.spark.sql.connector.catalog.CatalogV2Implicits.NamespaceHelper

/**
 * Physical plan node for showing current catalog/namespace.
 */
case class ShowCurrentNamespaceExec(
    output: Seq[Attribute],
    catalogManager: CatalogManager)
  extends V2CommandExec {
  override protected def run(): Seq[InternalRow] = {
    Seq(toCatalystRow(catalogManager.currentCatalog.name, catalogManager.currentNamespace.quoted))
  }
}
